package com.sky.aspect;


import com.sky.anno.Autofill;
import com.sky.constant.AutoFillConstant;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.time.LocalDateTime;


@Slf4j
@Component
@Aspect
public class AutofillAspect {

    @Before("@annotation(com.sky.anno.Autofill)")
    public void autoFill(JoinPoint joinPoint) {
        MethodSignature methodSignature = (MethodSignature) joinPoint.getSignature();
        Method method = methodSignature.getMethod();
        Autofill autofill = method.getAnnotation(Autofill.class);
        OperationType operationType = autofill.value();

        Object[] args = joinPoint.getArgs();

        if(args == null || args.length == 0) {
            return;
        }

        Object entity = args[0];

        try {
            if(operationType == OperationType.INSERT) {
                Method setCreateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_TIME, LocalDateTime.class);
                Method setUpdateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                Method setCreateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_USER, Long.class);
                Method setUpdateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);

                setCreateTime.invoke(entity,LocalDateTime.now());
                setUpdateTime.invoke(entity,LocalDateTime.now());
                setCreateUser.invoke(entity, BaseContext.getCurrentId());
                setUpdateUser.invoke(entity,BaseContext.getCurrentId());
            }else if(operationType == OperationType.UPDATE) {
                Method setUpdateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                Method setUpdateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);

                setUpdateTime.invoke(entity,LocalDateTime.now());
                setUpdateUser.invoke(entity,BaseContext.getCurrentId());
            }
        } catch (Exception e) {
            throw new RuntimeException(e);

        }
    }
}
